WIP - refine Transaction

Make it closer to the actual Sentry spec. This will
require tweaking OpenTelemetry.SpanProcessor in the
other branch so that it creates Transaction structs
with the correct fields.

lib/sentry/client.ex

@@ -285,7 +285,7 @@ defmodule Sentry.Client do
   @spec render_transaction(%Transaction{}) :: map()
   def render_transaction(%Transaction{} = transaction) do
     transaction
-    |> Transaction.to_map()
+    |> Transaction.to_payload()
     |> Map.merge(%{
       platform: "elixir",
       sdk: %{

lib/sentry/interfaces.ex

@@ -306,7 +306,7 @@ defmodule Sentry.Interfaces do
                 ]
 
     @doc false
-    def to_map(%__MODULE__{} = span) do
+    def to_payload(%__MODULE__{} = span) do
       Map.from_struct(span)
     end
   end

lib/sentry/test.ex

@@ -337,7 +337,7 @@ defmodule Sentry.Test do
 
       iex> Sentry.Test.start_collecting_sentry_reports()
       :ok
-      iex> Sentry.send_transaction(Sentry.Transaction.new(%{span_id: "123", spans: []}))
+      iex> Sentry.send_transaction(Sentry.Transaction.new(%{span_id: "123", start_timestamp: "2024-10-12T13:21:13", timestamp: "2024-10-12T13:21:13", spans: []}))
       {:ok, ""}
       iex> [%Sentry.Transaction{}] = Sentry.Test.pop_sentry_transactions()
 

lib/sentry/transaction.ex

@@ -7,30 +7,54 @@ defmodule Sentry.Transaction do
 
   @moduledoc since: "11.0.0"
 
+  alias Sentry.{Config, UUID, Interfaces.Span, Interfaces.SDK}
+
   @typedoc since: "11.0.0"
+  @type t() :: %{
+          # Required
+          required(:event_id) => <<_::256>>,
+          required(:start_timestamp) => String.t() | number(),
+          required(:timestamp) => String.t() | number(),
+          required(:platform) => :elixir,
+          required(:contexts) => %{
+            required(:trace) => %{
+              required(:trace_id) => String.t(),
+              required(:span_id) => String.t(),
+              optional(:parent_span_id) => String.t(),
+              optional(:op) => String.t(),
+              optional(:description) => String.t(),
+              optional(:status) => String.t()
+            }
+          },
 
-  alias Sentry.{Config, UUID, Interfaces.Span}
+          # Optional
+          optional(:environment) => String.t(),
+          optional(:transaction) => String.t(),
+          optional(:transaction_info) => map(),
+          optional(:measurements) => map(),
+          optional(:type) => String.t(),
+          optional(:tags) => map(),
+          optional(:data) => map(),
 
-  @type t() :: %__MODULE__{
-          event_id: String.t(),
-          span_id: String.t(),
-          spans: [Span.t()],
-          environment: String.t(),
-          transaction: String.t(),
-          transaction_info: map(),
-          contexts: map(),
-          measurements: map(),
-          type: String.t()
+          # Interfaces
+          optional(:spans) => [Span.t()],
+          optional(:sdk) => SDK.t()
         }
 
-  @enforce_keys [:event_id, :span_id, :spans, :environment]
+  @enforce_keys [:event_id, :span_id, :start_timestamp, :timestamp]
 
   defstruct @enforce_keys ++
               [
+                :spans,
                 :transaction,
                 :transaction_info,
                 :contexts,
                 :measurements,
+                :sdk,
+                :platform,
+                :environment,
+                :tags,
+                :data,
                 type: "transaction"
               ]
 
@@ -44,35 +68,10 @@ defmodule Sentry.Transaction do
     )
   end
 
-  # Common attributes between Transaction and Span:
-  #
-  # span_id - Used to identify spans in both structs
-  # type - Transaction has a default "transaction" type, Span has it in data
-  # data - Transaction has contexts/measurements, Span has data field
-  # timestamp - Transaction inherits from root span, Span has explicit timestamp
-  #
   @doc false
-  def to_map(%__MODULE__{} = transaction) do
-    transaction_attrs =
-      Map.take(transaction, [
-        :event_id,
-        :environment,
-        :transaction,
-        :transaction_info,
-        :contexts,
-        :measurements,
-        :type
-      ])
-
-    {[root_span], child_spans} = Enum.split_with(transaction.spans, &is_nil(&1.parent_span_id))
-
-    IO.inspect(root_span)
-    IO.inspect(child_spans)
-
-    root_span
-    |> Span.to_map()
-    |> Map.put(:spans, Enum.map(child_spans, &Span.to_map/1))
-    |> Map.drop([:description])
-    |> Map.merge(transaction_attrs)
+  def to_payload(%__MODULE__{} = transaction) do
+    transaction
+    |> Map.from_struct()
+    |> Map.update(:spans, [], fn spans -> Enum.map(spans, &Span.to_payload/1) end)
   end
 end

test/envelope_test.exs

@@ -117,24 +117,6 @@ defmodule Sentry.EnvelopeTest do
     test "works with transactions" do
       put_test_config(environment_name: "test")
 
-      root_span =
-        %Sentry.Interfaces.Span{
-          start_timestamp: 1_588_601_261.481_961,
-          timestamp: 1_588_601_261.488_901,
-          description: "GET /sockjs-node/info",
-          op: "http",
-          span_id: "b01b9f6349558cd1",
-          parent_span_id: nil,
-          trace_id: "1e57b752bc6e4544bbaa246cd1d05dee",
-          tags: %{"http.status_code" => "200"},
-          data: %{
-            "url" => "http://localhost:8080/sockjs-node/info?t=1588601703755",
-            "status_code" => 200,
-            "type" => "xhr",
-            "method" => "GET"
-          }
-        }
-
       child_spans =
         [
           %Sentry.Interfaces.Span{
@@ -149,9 +131,25 @@ defmodule Sentry.EnvelopeTest do
         ]
 
       transaction =
-        Sentry.Transaction.new(%{
-          span_id: root_span.span_id,
-          spans: [root_span | child_spans],
+        create_transaction(%{
+          start_timestamp: 1_588_601_261.481_961,
+          timestamp: 1_588_601_261.488_901,
+          contexts: %{
+            trace: %{
+              trace_id: "1e57b752bc6e4544bbaa246cd1d05dee",
+              span_id: "b01b9f6349558cd1",
+              description: "GET /sockjs-node/info",
+              op: "http"
+            }
+          },
+          tags: %{"http.status_code" => "200"},
+          data: %{
+            "url" => "http://localhost:8080/sockjs-node/info?t=1588601703755",
+            "status_code" => 200,
+            "type" => "xhr",
+            "method" => "GET"
+          },
+          spans: child_spans,
           transaction: "test-transaction"
         })
 
@@ -163,8 +161,8 @@ defmodule Sentry.EnvelopeTest do
 
       assert {:ok, decoded_transaction} = Jason.decode(transaction_line)
       assert decoded_transaction["type"] == "transaction"
-      assert decoded_transaction["start_timestamp"] == root_span.start_timestamp
-      assert decoded_transaction["timestamp"] == root_span.timestamp
+      assert decoded_transaction["start_timestamp"] == transaction.start_timestamp
+      assert decoded_transaction["timestamp"] == transaction.timestamp
 
       assert [span] = decoded_transaction["spans"]
 

test/sentry/client_report/sender_test.exs

@@ -4,7 +4,7 @@ defmodule Sentry.ClientReportTest do
   import Sentry.TestHelpers
 
   alias Sentry.ClientReport.Sender
-  alias Sentry.{Event, Transaction, Interfaces.Span}
+  alias Sentry.Event
 
   setup do
     original_retries =
@@ -30,16 +30,15 @@ defmodule Sentry.ClientReportTest do
           event_id: Sentry.UUID.uuid4_hex(),
           timestamp: "2024-10-12T13:21:13"
         },
-        Transaction.new(%{
-          span_id: @span_id,
+        create_transaction(%{
           transaction: "test-transaction",
           spans: [
-            %Span{
+            create_span(%{
               span_id: @span_id,
               trace_id: Sentry.UUID.uuid4_hex(),
               start_timestamp: "2024-10-12T13:21:13",
               timestamp: "2024-10-12T13:21:13"
-            }
+            })
           ]
         })
       ]

test/sentry/transaction_test.exs

@@ -0,0 +1,24 @@
+defmodule Sentry.TransactionTest do
+  use Sentry.Case, async: true
+
+  alias Sentry.Transaction
+
+  import Sentry.TestHelpers
+
+  describe "to_payload/1" do
+    setup do
+      {:ok, %{transaction: create_transaction()}}
+    end
+
+    test "returns a map representation of the transaction", %{transaction: transaction} do
+      transaction_payload = Transaction.to_payload(transaction)
+
+      [child_span] = transaction_payload[:spans]
+
+      assert transaction_payload[:contexts][:trace][:trace_id] == "trace-312"
+
+      assert child_span[:parent_span_id] == transaction.span_id
+      assert child_span[:span_id] == "span-123"
+    end
+  end
+end

test/sentry_test.exs

@@ -239,9 +239,14 @@ defmodule SentryTest do
   describe "send_transaction/2" do
     setup do
       transaction =
-        Sentry.Transaction.new(%{
-          span_id: "root-span",
+        create_transaction(%{
           transaction: "test-transaction",
+          contexts: %{
+            trace: %{
+              trace_id: "trace-id",
+              span_id: "root-span"
+            }
+          },
           spans: [
             %Sentry.Interfaces.Span{
               span_id: "root-span",

test/support/test_helpers.ex

@@ -2,6 +2,8 @@ defmodule Sentry.TestHelpers do
   import ExUnit.Assertions
 
   alias Sentry.Config
+  alias Sentry.Interfaces.Span
+  alias Sentry.Transaction
 
   @spec put_test_config(keyword()) :: :ok
   def put_test_config(config) when is_list(config) do
@@ -50,6 +52,40 @@ defmodule Sentry.TestHelpers do
     decode_envelope_items(rest)
   end
 
+  def create_span(attrs \\ %{}) do
+    Map.merge(
+      %Span{
+        trace_id: "trace-312",
+        span_id: "span-123",
+        start_timestamp: "2025-01-01T00:00:00Z",
+        timestamp: "2025-01-02T02:03:00Z"
+      },
+      attrs
+    )
+  end
+
+  def create_transaction(attrs \\ %{}) do
+    Transaction.new(
+      Map.merge(
+        %{
+          span_id: "parent-312",
+          start_timestamp: "2025-01-01T00:00:00Z",
+          timestamp: "2025-01-02T02:03:00Z",
+          contexts: %{
+            trace: %{
+              trace_id: "trace-312",
+              span_id: "parent-312"
+            }
+          },
+          spans: [
+            create_span(%{parent_span_id: "parent-312"})
+          ]
+        },
+        attrs
+      )
+    )
+  end
+
   defp decode_envelope_items(items) do
     items
     |> Enum.chunk_every(2)